I know him from his Bundesliga days quite well. More a squad builder DoF than a fantastic head coach, so I wouldn't expect any immediate fireworks. His sides are usually very disciplined defensively, I could even imagine him playing a 442 counter attacking style, he is not very possession orientated.Never heard of him.
Apparently, we gave him a 2-year contract after this season as an advisor. Half measures, but I hope he can teach Fletch and Murtough a thing or two about how to pick the right coaches and players.